From: kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk>
Date: Fri, 15 Sep 2006 10:17:26 +0000 (+0100)
Subject: [XEN] Scheduler pings only CPUs in a VCPU's affinity mask to balance load.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~15658^2~52^2~5
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22Dat/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22Dat?a=commitdiff_plain;h=68043a01dc986addf3ed68fad515286a1d5179f8;p=xen.git

[XEN] Scheduler pings only CPUs in a VCPU's affinity mask to balance load.
Signed-off-by: Keir Fraser <keir@xensource.com>
---

diff --git a/xen/common/sched_credit.c b/xen/common/sched_credit.c
index 3465542083..5e02ead91f 100644
--- a/xen/common/sched_credit.c
+++ b/xen/common/sched_credit.c
@@ -290,6 +290,7 @@ __runq_tickle(unsigned int cpu, struct csched_vcpu *new)
         {
             CSCHED_STAT_CRANK(tickle_idlers_some);
             cpus_or(mask, mask, csched_priv.idlers);
+            cpus_and(mask, mask, new->vcpu->cpu_affinity);
         }
     }
 
@@ -1001,6 +1002,7 @@ csched_load_balance(int cpu, struct csched_vcpu *snext)
         }
         else if ( is_idle_vcpu(per_cpu(schedule_data, peer_cpu).curr) )
         {
+            CSCHED_STAT_CRANK(steal_peer_idle);
             speer = NULL;
         }
         else